CN106553161B - Power tool - Google Patents
Power tool Download PDFInfo
- Publication number
- CN106553161B CN106553161B CN201610723795.8A CN201610723795A CN106553161B CN 106553161 B CN106553161 B CN 106553161B CN 201610723795 A CN201610723795 A CN 201610723795A CN 106553161 B CN106553161 B CN 106553161B
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- CN
- China
- Prior art keywords
- power tool
- brake
- movable part
- shrapnel
- shell
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of power tools, comprising: shell, main shaft and brake shrapnel；Main shaft forms or is fixedly connected with brake disc, and brake shrapnel makes principal shaft braking for contacting brake disc；Wherein, brake shrapnel includes: fixed part and movable part, and fixed part is fixedly attached to shell, and movable part can be mobile relative to shell；Movable part is equipped with the friction plate for contacting with brake disc；When movable part is in first position, friction plate is contacted with brake disc disengagement；When movable part is in the second position, friction plate is contacted with brake disc；The fexible bias pressure movable part of brake shrapnel itself is mobile from first position to the second position.Brake shrapnel assembly in the power tool is simple, and occupied assembly space is smaller.
Description
Technical field
The present invention relates to a kind of power tools, and in particular to a kind of power tool of strap brake function.
Background technique
The power tool of the polishing class such as angle mill be typically provided braking mechanism enable them to after user stops using and
When stop angle grinding etc. function accessories rotation, with protect user using safe.
In general, brake is divided into electric brake and mechanical brake.Electric brake has certain limitation, and is easy damage
Hurt motor, mechanical brake is then direct and reliable.
Existing mechanical brake goes to carry out contact brake often through elastic element driving brake piece, but for cloth simultaneously
Set brake block and elastic element and there are enough strokes, the power tool with mechanical brake often assembles complicated and occupies machine
Tool space.
Summary of the invention
A kind of power tool, comprising: shell, main shaft and brake shrapnel；Main shaft forms or is fixedly connected with brake disc, brakes
Elastic slice makes principal shaft braking for contacting brake disc；Wherein, brake shrapnel includes: fixed part and movable part, and fixed part is fixedly connected
To shell, movable part can be mobile relative to shell；Movable part is equipped with the friction plate for contacting with brake disc；Movable part is in the
When one position, friction plate is contacted with brake disc disengagement；When movable part is in the second position, friction plate is contacted with brake disc；Braking
The fexible bias pressure movable part of elastic slice itself is mobile from first position to the second position.
Further, power tool further include: sliding part；Sliding part makes movable part be maintained at first position；Sliding part with
Shell composition is slidably connected.
Further, the glide direction of sliding part is parallel with main shaft.
Further, shell is equipped with guide groove, and movable part is embedded in guide groove.
Further, guide groove is parallel with main shaft.
Further, power tool further include: prime mover；Prime mover accommodates inside housings, and brake disc setting is being braked
Between elastic slice and prime mover.
Further, brake shrapnel, which is additionally provided with, passes through portion for what main shaft passed through.
Further, shell is formed with inclined-plane, and the direction of the plane where inclined-plane is intersected with inclined main axes, and power tool is also
Including fixing piece, the fixed part of brake shrapnel is set between fixing piece and inclined-plane.
Further, when movable part is in first position, brake shrapnel stores elastic potential energy；Movable part is in the second position
When, brake shrapnel discharges elastic potential energy.
Further, power tool is electric angle mill.
It is braked by brake shrapnel, enables to the assembly of power tool simple, and the space of assembly can be reduced.
Detailed description of the invention
Fig. 1 is the complete machine structure schematic diagram of power tool；
Fig. 2 is the perspective view of the section transmission mechanism and output mechanism in Fig. 1 inside power tool；
Fig. 3 is the sectional view of the brake shrapnel and main shaft in Fig. 2；
Fig. 4 is the explosive view of structure shown in Fig. 2.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Power tool 100 shown in FIG. 1 includes: shell 11, Operation switch 12, prime mover (not shown), transmission mechanism (figure
Do not show) and output mechanism 13.As shown in Fig. 2, transmission mechanism includes at least main shaft 14, output mechanism 13 includes at least output shaft
15, brake disc 16 is provided on main shaft 14, power tool 100 further includes contacting brake shrapnel 17 with brake disc 16, to realize
Braking to main shaft 14.
For convenience of explanation, power tool 100 is using an electric angle mill as example；Certain power tool 100 can also be with
It is the polishing class tool of other hand-helds, such as sander；Or power tool 100 can also be used to outputting torsion, such as spiral shell
Silk batch or the multi-purpose tool for having both screwdriver and electric drill function；Alternatively, power tool 100 may also be used to cut workpiece,
Such as reciprocating saw, annular saw, sweep-saw；Power tool 100 is also possible to use for doing impact, such as electric hammer；Power tool 100 is also
It may be gardens class tool, such as pruner and chain saw；In addition, power tool 100 is also possible to as other purposes, for example stir
Machine.
As long as these power tools 100 have the main shaft 14 being able to rotate, it is possible to using technical solution disclosed below
Substantive content.
Again as shown in Figure 1, shell 11 is used to accommodate each component in power tool 100, may include: handle portion 111,
Output section 112 and interconnecting piece 113.
Wherein, handle portion 111 is used to hold for user, is also formed for accommodating the components such as prime mover in handle portion 111
Accommodation space.Output section 112 is at least partly opened wide for accommodating output mechanism 13, the side of output section 112, so that output
Mechanism 13 can partially be extend out to except shell 11.Interconnecting piece 113 is set between handle portion 111 and output section 112, interconnecting piece
113 constitute with handle portion 111 and output section 112 be fixedly connected respectively, so that their threes were configured to move together
It is whole.
Operation switch 12 can be installed on the handle portion 111 of shell 11, in this way, user is when holding handle portion 111, energy
The trigger action switch 12 of enough relatively convenients, the Operation switch 12 can be the main switch for starting prime mover.
Prime mover is contained in handle portion 111 and is formed by accommodation space, and for electric angle mill, which can be with
For a motor.As shown in Fig. 2, motor includes motor shaft 18,18 energy driving spindle 14 of motor shaft is rotated by axis of first axle.
Transmission mechanism includes above mentioned main shaft 14, can also include first bevel gear 19, first bevel gear 19 and master
Axis 14, which is constituted, to be rotated synchronously.Wherein, first bevel gear 19 and main shaft 14 are constituted to rotate synchronously and be referred to as one in both
When a rotation, another is also rotated with it, and when in both a braking, another is also braked therewith.This is same
The concept of step rotation is also applied for other components for constituting synchronous rotation in this case, repeats no more.
Output mechanism 13 includes above mentioned output shaft 15, can also include second bevel gear 21, second bevel gear 21
It constitutes and rotates synchronously with output shaft 15.Wherein, the extending direction of output shaft 15 is substantially vertical with the extending direction of main shaft 14, and second
Bevel gear 21 engages with first bevel gear 19, so that prime mover can be incited somebody to action by main shaft 14, first bevel gear 19, second bevel gear 21
Power is transferred to output shaft 15, and driving output shaft 15 is rotated by axis of the second axis perpendicular to first axle.
The structure of brake shrapnel 17 is introduced in detail below:
As shown in Figure 3 and Figure 4, above mentioned brake disc 16, brake disc 16 are formed or are fixedly connected on main shaft 14
It constitutes and rotates synchronously with main shaft 14.Brake disc 16 is arranged between brake shrapnel 17 and prime mover, and substantially one around master
The disk of axis 14.The disk direction of brake disc 16 also is normal to main shaft 14.
Brake shrapnel 17 includes: fixed part 171 and movable part 172, wherein movable part 172 is also fixedly connected with friction plate
22。
Specifically, fixed part 171 is fixedly connected with the interconnecting piece 113 of shell 11.It, can for a brake shrapnel 17
To include two fixed parts 171, two fixed parts 171 are set to the two sides of movable part 172.The entirety of brake shrapnel 17 is substantially in
Reveal a U-shaped structure, and the opening of the U-shaped structure has the trend being gradually expanded.
Movable part 172 can opposite shell 11 interconnecting piece 113 it is mobile, and at least have in moving process first position with
The second position.When movable part 172 is in first position, friction plate 22 is contacted with the disengagement of brake disc 16, and at movable part 172
When the second position, friction plate 22 is contacted with brake disc 16, and friction plate 22 brakes brake disc 16 by frictional force at this time.
In order to enable main shaft 14 passes through brake shrapnel 17, brake shrapnel 17 further includes one by portion 173, this passes through portion
173 can be a notch being arranged between two fixed parts 171, or a through-hole.
Friction plate 22 is arranged in the side of the close brake disc 16 of brake shrapnel 17, friction plate 22 close to brake disc 16 one
The surface of side is also formed with scraggly particle, for increasing the coefficient of friction of friction plate 22.
A pair of of groove 113a is formed on interconnecting piece 113, a pair of of fixed part 171 is at least partially embedded to groove 113a respectively
It is interior.Across fixed part 171 and the fixation realized them is stretched in groove 113a by screw.
In order to realize that movable part 172 can be mobile relative to shell 11, power tool 100 further includes sliding part 23.Sliding part 23
It is slidably connected with the composition of shell 11, sliding part 23 is parallel with main shaft 14 with respect to the glide direction of shell 11.Specifically, sliding part 23
One end can be contacted with movable part 172, and the other end is connect with Operation switch 12.Operation switch 12 is slidably connected with the composition of shell 11,
When Operation switch 12 slides into the starting position that can start prime mover, Operation switch 12 will drive sliding part 23 and slide together,
To drive movable part 172 to be moved to first position and be maintained at first position, friction plate 22 connects with the disengaging of brake disc 16 at this time
Touching；And when Operation switch 12 slides into the closed position for closing prime mover, Operation switch 12 will drive sliding part 23 and slide together
It moves and is detached from movable part 172, the fexible bias pressure movable part 172 of itself of brake shrapnel 17 is from first position to the second position at this time
Mobile, friction plate 22 contacts realization braking with brake disc 16.
Guide groove 113b is also formed on the interconnecting piece 113 of shell 11, movable part 172 is embedded in guide groove 113b, leads
Be parallel to main shaft 14 to the extending direction of slot 113b, guide groove 113b be oriented to movable part 172 first position and the second position it
Between move.
In order to realize that brake shrapnel 17 is moved by the fexible bias pressure movable part 172 of itself from first position to the second position
It is dynamic, the inclined-plane 113c that can be contacted with fixed part 171 is also formed on the interconnecting piece 113 of shell 11, power tool 100 further includes using
In the fixing piece 24 that fixed part 171 is fixed to inclined-plane 113c.
Specifically, inclined-plane 113c is formed in the slot bottom of the groove 113a of interconnecting piece 113, the plane where inclined-plane 113c
Intersect with the inclination of main shaft 14 in direction.Fixing piece 24 has the contact surface parallel with inclined-plane 113c (figure is not marked), and screw sequentially passes through
The fixed part 171 and groove 113a of fixing piece 24, brake shrapnel 17, so that brake shrapnel 17 is inclined to be fixed on contact surface
Between inclined-plane 113c, at this time when Operation switch 12 is in the closed position, movable part 172 and fixed part 171 are located at one
The two sides of a plane perpendicular to main shaft 14, brake shrapnel 17 substantially intersect with the inclination of main shaft 14.
In this way, sliding part 23 drives movable part 172 to be moved to first position when Operation switch 12 is moved to starting position
When, brake shrapnel 17 stores elastic potential energy, which has so that the trend mobile to the second position of movable part 172, and one
When denier Operation switch 12 is moved to closed position, elastic potential energy that brake shrapnel 17 is stored driving movable part 172 is reset to the
Two positions, brake shrapnel 17 discharge elastic potential energy.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of power tool, comprising:
Shell；
Main shaft forms or is fixedly connected with brake disc；
Brake shrapnel makes the principal shaft braking for contacting the brake disc；
Wherein,
The brake shrapnel includes:
Fixed part is fixedly attached to the shell；
Movable part, can be mobile relative to the shell；
The movable part is equipped with the friction plate for contacting with the brake disc；When the movable part is in first position, institute
Friction plate is stated to contact with brake disc disengagement；When the movable part is in the second position, the friction plate and the brake disc
Contact；Movable part described in the fexible bias pressure of the brake shrapnel itself is mobile from the first position to the second position.
2. power tool according to claim 1, it is characterised in that:
The power tool further include:
Sliding part can make the movable part be maintained at the first position；
The sliding part is slidably connected with shell composition.
3. power tool according to claim 2, it is characterised in that:
The glide direction of the sliding part is parallel with the main shaft.
4. power tool according to claim 1, it is characterised in that:
The shell is equipped with guide groove, and the movable part is embedded in the guide groove.
5. power tool according to claim 4, it is characterised in that:
The guide groove is parallel with the main shaft.
6. power tool according to claim 1, it is characterised in that:
The power tool further include:
Prime mover is contained in the enclosure interior；
The brake disc is arranged between the brake shrapnel and described prime mover.
7. power tool according to claim 1, it is characterised in that:
The brake shrapnel, which is additionally provided with, passes through portion for what the main shaft passed through.
8. power tool according to claim 7, it is characterised in that:
The shell is formed with inclined-plane, and the direction of the plane where the inclined-plane is intersected with the inclined main axes, the power work
Tool further includes fixing piece, and the fixed part of the brake shrapnel is set between the fixing piece and the inclined-plane.
9. power tool according to claim 1, it is characterised in that:
When the movable part is in the first position, the brake shrapnel stores elastic potential energy；
When the movable part is in the second position, the brake shrapnel discharges elastic potential energy.
10. according to claim 1 to power tool described in 9 any one, it is characterised in that:
The power tool is electric angle mill.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015106414113 | 2015-09-30 | ||
| CN201510641411 | 2015-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106553161A CN106553161A (en) | 2017-04-05 |
| CN106553161B true CN106553161B (en) | 2019-08-06 |
Family
ID=58418372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610723795.8A Active CN106553161B (en) | 2015-09-30 | 2016-08-25 | Power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106553161B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254588A (en) * | 2006-12-27 | 2008-09-03 | 麦太保有限公司 | Portable electric tool with braking device |
| CN201879427U (en) * | 2010-11-22 | 2011-06-29 | 九阳股份有限公司 | Juicer with rapid braking |
| CN102189468A (en) * | 2010-03-09 | 2011-09-21 | 株式会社牧田 | Electric tool |
| CN102886729A (en) * | 2011-07-22 | 2013-01-23 | 株式会社牧田 | Electric power tool |
| CN102996688A (en) * | 2012-12-14 | 2013-03-27 | 贵州新安航空机械有限责任公司 | Novel high-speed brake block |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008103079A1 (en) * | 2007-02-22 | 2008-08-28 | Husqvarna Aktiebolag | Retarding device for a rotational cutting machine |
| DE102011005809A1 (en) * | 2011-03-18 | 2012-09-20 | Robert Bosch Gmbh | Machine tool braking device |
| CN204186849U (en) * | 2014-11-10 | 2015-03-04 | 钟思平 | Air-pressure disc brake automatic resetting device |
-
2016
- 2016-08-25 CN CN201610723795.8A patent/CN106553161B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254588A (en) * | 2006-12-27 | 2008-09-03 | 麦太保有限公司 | Portable electric tool with braking device |
| CN102189468A (en) * | 2010-03-09 | 2011-09-21 | 株式会社牧田 | Electric tool |
| CN201879427U (en) * | 2010-11-22 | 2011-06-29 | 九阳股份有限公司 | Juicer with rapid braking |
| CN102886729A (en) * | 2011-07-22 | 2013-01-23 | 株式会社牧田 | Electric power tool |
| CN102996688A (en) * | 2012-12-14 | 2013-03-27 | 贵州新安航空机械有限责任公司 | Novel high-speed brake block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106553161A (en) | 2017-04-05 |
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| PB01 | Publication | ||
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Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: 211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |